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use crossbeam_channel::{Receiver, Sender};
use crate::utils::result::{OCLStreamError, OCLStreamResult};
pub fn unbounded<T>() -> (OCLStream<T>, OCLStreamSender<T>)
where
T: Send + Sync,
{
let (tx, rx) = crossbeam_channel::unbounded();
let stream = OCLStream { rx };
let sender = OCLStreamSender { tx };
(stream, sender)
}
pub fn bounded<T>(size: usize) -> (OCLStream<T>, OCLStreamSender<T>)
where
T: Send + Sync,
{
let (tx, rx) = crossbeam_channel::bounded(size);
let stream = OCLStream { rx };
let sender = OCLStreamSender { tx };
(stream, sender)
}
#[derive(Clone, Debug)]
pub struct OCLStream<T>
where
T: Send + Sync,
{
rx: Receiver<OCLStreamResult<T>>,
}
impl<T> OCLStream<T>
where
T: Send + Sync,
{
pub fn next(&mut self) -> Result<T, OCLStreamError> {
self.rx.recv()?
}
pub fn has_next(&self) -> bool {
!self.rx.is_empty()
}
}
pub struct OCLStreamSender<T>
where
T: Send + Sync,
{
tx: Sender<OCLStreamResult<T>>,
}
impl<T> Clone for OCLStreamSender<T>
where
T: Send + Sync,
{
fn clone(&self) -> Self {
Self {
tx: self.tx.clone(),
}
}
}
impl<T> OCLStreamSender<T>
where
T: Send + Sync + 'static,
{
pub fn send(&self, value: T) -> OCLStreamResult<()> {
self.tx.send(Ok(value)).map_err(OCLStreamError::from)
}
pub fn err(&self, err: OCLStreamError) -> OCLStreamResult<()> {
self.tx.send(Err(err)).map_err(OCLStreamError::from)
}
}